Sinker guide for knitting frames



Feb. 5, 1924. 1,482,395

E. HAAGA SINKER GUIDE FOR KNITTING FRAMES Filed June 28, 1920 4 Sheets-Sheet 1 Inveniar:

Feb. 5 1924. I

E. HAAGA SINKER GUIDE FOR KNITTING FRAMES Filed June 28, 1920 4 Sheets-Sh eet 2 Feb. 5 1924. 1,482,395

- E. HAAGA SINKER' GUIDE FOR KNITTING FRAMES Filed June 28. 1920 4 Sheets-She et 5 zzm Feb. 5 1924. y 1,482,395

. E. HAAGA SINKER GUIDE FOR KNITTING'FRAMES Filed June 28, 1920 4 Sheets-Sheet A Patented Feb. 5, 1924.

EMIL enee, or STUTTGART, GERMANY.

SI'NKER GUIDE FOR KNITTING FRAMES.

Application filed June 28, 1920; Serial No. 392,463.

To all wli-omitwmy concern .1

Be it known that: I, EMIL HAAGA, a citizen of the German Empiralresiding at Stuttgart, Germany, have invented certain 6 new and useful Improvements; in Sinker Guides -tor Knitting Frames (for which I have filed application for. patent in (anal;- many June 3rd, 1919), of which the following is a specification. i 10 and more especially too-an improved. sinker guidefor use in frames. of the sort, in which two sets of sinkers .are made .useof.

It was hitherto customary in connection 16 with knitting frames to effect the operations of sinking, landing, knocking-over and p f the loops by aid of a single sinker, in which case however, the two.- lastmentioned operations were efi'ected simulta- 20 neously, i. e., by a conjoint motion of the bar-sets. It has further been proposed to carry out the knocking-over and locking-in operations by means of special sinkers, in which case again the saidioperations were of tlaesinker bar sets. Now the productive capacity of knitting frames of the said kind will prove to be lower owing to. the single operations aforementioned [being carried out separately, and in the latter of the two known arrangements owing to the locking-in operation being carried out simultaneously there is no. POSSlb lllQFOLE carryin the sinkersonce moreintowlowered position with regard to the loops formed inorder to prevent these loops from being undone. l

Besides knitting frames have become known in the case of which the attempt. was made to increase the productivity by caus ing the landing and knocking-over-of the.

loops totake place separately and in immediate succession after the sinking by aid of jack sinkers (Jouves circular frame), instead of simultaneously and by meansof bars. However, frames: of this. kind embody the drawback of the locking in operation being carried out but insufliciently, while requiring circumstantial .contrivances of a special nature, such-Has, for example, strippers, stripper andloekingdn wheels; which take up space and-thus increase. the want My invention relates to knitting frames is that the relation eiiected at one and the same time by means;

other operation, say,

of room already only too clearly apparent in connection with knit-ting frames.

To over-come these drawbacks the. said frames were so modified. that the jack sinkers henceforth not only efi'ected the: landing and lmocking-over of the loops, but also the locking-in of the same, while due provision was made for preventing loops that had beenknocked-over fromslipping back, and at the same time the sinkers were carried once more into their sinking position with regard to the loops formed in the preceding,sinking'operation in order to prevent theseyloops from being undone took place. Notwithstanding, it was found that even frames having combined sinking, knocking-over and locking-in sinkers retain the drawback of the. landing of the loops proving especially difficult; The reason for this of the distance maintained between the sinker nibs and the place where the knocking-over is to be effected being fixed and, nnalterable, owing to the use of a combination sinker, the. presslng operation, required to effect the landing of the loops, has to be carried out While the sinkers are still moving forward.

All the foregoing drawbacks are success fully overcome by means of my invention, in, that the several knitting operationssare so divided between two sinkers as to permit the sinking to be carried by the one, and the landing, knocking-over, locking-in, and preventing loops -from slipping back etc. are carried out by the other sinker, both sinkers being moved singly and independ-- ently-nev.er conjointly-in succession. By

these means, there is, created the possibility of temporarily deferring the one or' the for example, that of landing the loops, until'a reliable pressing operatiomnamely at the normal pressing point-will be secured.- While embodying the greatest possible productivity and absolutely reliable locking-in arrangements,

the improved lmitting frame possesses the best possible landing conditions. A special advantage of my invention resides .furthermore in the feature of the sinkers retaining their lowered position after the locking-in operation has been effected. By these means they exert a pressure on the upper row of loops as the movement continues, such pressure remaining in force until the sinkers resume their operative position for the purpose of forming a fresh row of loops.

According to my invention, provision is also made for enabling the sinkers to be retained in their lowered position-in which, as mentioned above, they bear against the old course of loops-not only by their own proper weight, but in addition by aid of a spring, to which spring there may further be given a dual effect, namely of pressing backwards and drawin downwards.

The sinker guide in the improved structure is so arranged, that the sinkers obtain all their motions, in particular that of knocking over, from parts located outside of the work-piece. There is thus no possibility of parts of the mechanism, such as cams, stops or the like, being in any way covered by the finished goods, and the movement of the mechanism may always be reliably followed and controlled.

Seeing that special knocking-over devices are ent1rely dispensed with, the improved frame according to my invention possesses the further advantage of securing a saving in space, a feature of paramount importance in connection with frames of this description.

A structure embodying my invention is illustrated by Way of example in the accompanying drawings, forming a part of this specification. In the drawings Fig. 1 is a side elevation,

Fig. 2 a front elevation,

Fig. 3 a plan of the knocking-over member,

Figs. 4 to 7 show the sinkers in their working positions relatively to the needles,

Figs. 8 to 11 the action of the sinkers on the loops, on an enlarged scale and with special reference to the working positions disclosed by Figs. 41 to 7,

Figs. 12 and 13 a modified form of support for the knocking-over spring, and

Figs. 14: and 15 details.

The knocking-over sinkers 1 are disposed, after the manner of knocking-over rods, around the body 2 of the circular frame, but their lower extremities do not repose upon any mechanical parts being guided in a slotted ring and provided with recesses 3 to hold a spiral spring 4. On the rim 5 are mounted in a well known manner the needles 6. A journal 8, on which the knocking over member 9 is mounted, is disposed on a double angle member 7 arranged above the needles. The wedges 10, 11 serve for the return motion of the sinkers. 12 indicates the presser wheel and 13 the jack sinker. At their upper ends, the sinkers 1 are provided with beaks or nibs 1 1 bent inward. Connected with the recess 3, for

the spring t, there is an inclined plane For the runner 9 there are provided besides the customary cam face ab, two additional inclined faces 16 and 17.

The operation of the improved frame is as follows:

On the frame body 2 executing a revolution, the sinkers 1 are forced outward and out of their inoperative position along the cam face (0-?) of the runner 9. At the same time the upper nibbed end of the sinkers runs along the inclined face 16, and the sinkers are thus simultaneously raised and thereupon, by aid of the wedge 10, brought down on to the inclined face 17 at the end of the cam face, and finally returned into their initial position by means of the wedge 11. The sinkers are thus moved. out of their inoperative position (Figs. 1 and 8), and execute a double motion, i. e., in a lateral and in an upward direction. As a result, the old stitches which are locked in the throat of the sinkers, are released, and may, by closing the needles 6 be landed at the suitable moment by means of the presser wheel 12 on to the points of the needles (Figs. 5 and 9). As the frame continues its revolution the sinkers ascend to the highest point of the incline 16 and the cam face (Figs. 6 and 10) and knock-over the loops. I-Iereupon by means of wedge 10 and the inclined face 17, the downward motion is again initiated (Figs. 7 and 11), whereupon the stitches are locked-in. At the end of this operation, the sinkers are returned into their initial position by the help of wedge 11, whereupon the working process is started upon a new course.

In order to prevent the sinkers from being disturbed in their motion by the spring lodged in the recess 3, as also to permit them to freely follow the predetermined movements along the inclined faces 16, 17, each sinker is provided underneath the recess 3 with a special inclined face 15.

However, as may be seen from. Figs. 12 and 13, the spring may be, lodged in a re cess 3 to which no inclined face 15 is'joined. In that case, and as shown in Fig. 13, the spring is drawn out of its path on the sinker being raised, and by the effort of the spring to regain its initial position, the sinker is assisted in bearing against the upper row of loops.

Neither during the working operation, nor after the looping operation has been completed, do the sinkers repose upon the edge of the machine body, but ride by means of their throat on the finished loops, whereby any shifting of the position of the loops, even in the inoperative position, is prevented Owing to the dual motion simultaneously carried out bythe sinkers, the possibility is created of the sinkers rising at the same time while executing the lateral motion when the old course is landed. The old stitches are by these means released from the throat, and drawn up to the highest point 0 of the sinker (Fig. 15), in order to be pushed forward as closely as possible to the presser wheel. The presser wheel 12 may thus be always set on the proper pressing point of the needles, in contradistinction to certain other types of jack sinkers provided with locking-in throats, in the case of which the presser wheel, owing to the presence of the nib and the shape of the throat faces, must be so closely disposed to the head of the needle that an unfavorable pressing action is bound to arise:

I claim:

1. A knitting frame comprising in combination, a row of sinkers, a row of hookshaped bars disposed substantially at right angles to said sinkers, means for causing said bars to act on the yarn in two directions substantially at right angles to one another and means for causing said bars to act singly, one after the other, and independently of said sinkers.

2. A knitting frame comprising in combination, a row of sinkers, a row of hookshaped bars disposed substantially at right angles to said sinkers, means for causing said bars to act on the yarn in two directions substantially at right angles to one another, means for causing said bars to act singly, one after the other, and independently of said sinkers and means for causing said bars to remain in lowered position, after they have carried out the locking-in operation, until a fresh row of loops is to be formed.

3. A knitting frame comprising in combination, a row of sinkers, a row of hookshaped bars disposed substantially at right angles to said sinkers, means for causing said bars to act 011 the yarn in two directions substantially at right angles to one another,

means for causing said bars to act singly, one after the other, and independently of said sinkers and means for preventing said bars from reposing on the edge of the maclline bed.

4. A knitting frame comprising in combination, a row of sinkers, a row of hookshaped bars disposed substantially at right angles to said sinkers, means for causing said bars to act on the yarn in two directions substantially at right angles to one another, means for causing said bars to act singly, one after the other, and independently of said 'sinkers, a recess in the lower front portionof each bar and an elastic band encircling said bars and resting in said recesses.

5. A knitting frame comprising in combination, a row of sinkers, a row of hookshaped bars disposed substantially at right angles to said sinkers, means for causing said bars to act on the yarn in two directions substantially at right angles to one another, means for causing said bars to act singly, one after the other, and independently of said sinkers, a recess in the lower front portion of each bar, said recess terminating in an incline and an elastic band encircling said bars and resting in said recesses.

6. A knitting frame comprising in combination, a row of sinkers, a row of hookshaped bars disposed substantially at right angles to said sinkers, means for causing said bars toact on the yarn in two directions substantially at right angles to one another, means for causing said bars to act singly, one after the other, and independently of said sinkers, a recess in the lower front portion of each bar, an elastic band encircling said bars and resting in said recesses and an inwards bent rib at the upper end of each bar.

In testimony whereof I aflix my signature.

EMIL HAAGA. 

